2020 Lexus RX350 Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your 2020 Lexus RX350 and How to Address Them Effectively

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2020 Lexus RX350 is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A failure in oil system components, such as a worn oil pump or clogged oil filter, can lead to inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2020 Lexus RX350 is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the steps to diagnose the oil leak in a 2020 Lexus RX350?

To effectively diagnose an oil leak in your 2020 Lexus RX350, start by confirming that the fluid in question is indeed oil. This can be done by examining the color and consistency of the fluid; oil typically has a brown or black hue and a slick texture, while other fluids like brake or power steering fluid have distinct characteristics. Once you’ve verified the fluid, it’s wise to check the oil level using the dipstick, ensuring your vehicle is parked on a level surface and the engine is cool. This step not only helps you understand the severity of the leak but also provides insight into whether you need to add oil. If you suspect a leak, inspect the engine oil cooler and VVT oil lines, as these components are known to fail in earlier RX350 models. If the source of the leak remains elusive or if you notice significant oil loss, consulting a professional mechanic is advisable. They can perform a thorough inspection and provide a more detailed diagnosis, ensuring that any potential issues are addressed before they lead to more serious engine damage. By following this diagnostic approach, you can systematically identify and resolve oil leak issues in your vehicle.

What are the common causes of oil leaks in a 2020 Lexus RX350?

When dealing with oil leaks in a 2020 Lexus RX350, it's essential to understand the common problems that can arise. One of the primary culprits is engine gaskets, which can deteriorate over time, leading to leaks that may not only affect performance but also pose a risk of engine damage if left unaddressed. Additionally, oil system failures can occur, often stemming from issues such as a malfunctioning oil pump or clogged oil passages, which can disrupt the flow of oil and result in leaks. While oil pans are generally durable, they can be compromised by external factors like accidents or improperly tightened drain plugs, necessitating replacement. Regular maintenance checks and timely identification of these issues are crucial for preventing more significant repairs and ensuring the longevity of your vehicle's engine. By staying vigilant and addressing these common causes, DIY enthusiasts can effectively manage oil leaks and maintain their Lexus RX350 in optimal condition.

How urgent is it to address the oil leak in my 2020 Lexus RX350?

Addressing an oil leak in your 2020 Lexus RX350 is an urgent matter that should not be overlooked. Oil leaks can lead to a dangerous drop in oil pressure, which compromises the safety of your vehicle while driving. A significant leak may not only create unsightly stains on your driveway but can also indicate a serious underlying problem that could escalate if left unattended. The risk of severe engine damage is real; for instance, a burst oil line can lead to catastrophic failures that are costly to repair. Additionally, ignoring an oil leak can trigger warning lights on your dashboard, signaling low oil pressure and further endangering your engine's health. Regular maintenance and prompt attention to oil leaks are essential to ensure your Lexus operates smoothly and safely. By addressing this issue quickly, you can prevent further damage and maintain the performance and longevity of your vehicle.

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2020 Lexus RX350 Oil Leak Causes & Repair Costs | RepairPal